$ telnet localhost 25 Trying 127.0.0.1... Connected to localhost.localdomain. Escape character is '^]'. 220 unko ehlo unko 250-nai.homelinux.net 250-PIPELINING 250-SIZE 10240000 250-VRFY 250-ETRN 250-AUTH NTLM LOGIN PLAIN DIGEST-MD5 CRAM-MD5 250-AUTH=NTLM LOGIN PLAIN DIGEST-MD5 CRAM-MD5 250 8BITMIME mail from:<test@nai.homelinux.net> 250 Ok rcpt to:<root@nai.homelinux.net> 250 Ok data 354 End data